When comparing LightPaper for Mac vs Inkdrop, the Slant community recommends LightPaper for Mac for most people. In the question“What is the best Markdown editor for OS X?”LightPaper for Mac is ranked 16th while Inkdrop is ranked 19th. The most important reason people chose LightPaper for Mac is:

Can be extended to support Multimarkdown, GFM-style code fences with syntax highlighting and even math rendering.